Haen, Anthony De

, professor of medicine in the university of Vienna, was born at Leyden in 1704, and educated under the celebrated Boerhaave. After having received the degree of M. D. at his native place, he settled at the Hague, where he practised with success for nearly twenty years. Baron Van Swieten being acquainted with the extent of his talents, invited him to remove to Vienna, with the view of uniting with him in the proposed plan of reform, which he had prevailed on the empress to support, in the medical faculty of that capital. De Haen accordingly repaired to that city in 1754; and his merits were found fully equal to the expectations that had been formed of them. At the express command of Maria Theresa, he undertook a system of clinical education, in the hospital which he superintended, as the most advantageous method of forming good physicians: the result of this duty was the collection of a great number of valuable observations, which were published in the successive volumes of the work entitled “Ratio Medendi in Nosocomio Practico,Vienna, 1757, which amounted ultimately to sixteen. He died Sept. 5, 1776, at the age of seventy-two.

He published other medical works of considerable reputation, but added little to his fame by the last of them, | De Magia,1775, in which he attempted to prove the reality of magical operations. 1

1 Dict. Hist.--Rees’s Cyclopædia.